linux-kernel - [RESEND 1/4 v7] dt-bindings: Add Rockchip rk817 battery charger support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220520183037.2566-2-macroalpha82@gmail.com>
Date:   Fri, 20 May 2022 13:30:34 -0500
From:   Chris Morgan <macroalpha82@...il.com>
To:     linux-pm@...r.kernel.org
Cc:     linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, lee.jones@...aro.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        heiko@...ech.de, sre@...nel.org, jon.lin@...k-chips.com,
        zyw@...k-chips.com, zhangqing@...k-chips.com,
        Chris Morgan <macromorgan@...mail.com>,
        Maya Matuszczyk <maccraft123mc@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [RESEND 1/4 v7] dt-bindings: Add Rockchip rk817 battery charger support

From: Chris Morgan <macromorgan@...mail.com>

Create dt-binding documentation to document rk817 battery and charger
usage. New device-tree properties have been added.

- rockchip,resistor-sense-micro-ohms: The value in microohms of the
                                      sample resistor.
- rockchip,sleep-enter-current-microamp: The value in microamps of the
                                         sleep enter current.
- rockchip,sleep-filter-current: The value in microamps of the sleep
                                 filter current.

Signed-off-by: Chris Morgan <macromorgan@...mail.com>
Signed-off-by: Maya Matuszczyk <maccraft123mc@...il.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---

Note that this patch requires the following commit (still pending):
https://lore.kernel.org/linux-rockchip/20220519161731.1168-1-macroalpha82@gmail.com/

 .../bindings/mfd/rockchip,rk817.yaml          | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml b/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml
index bfc1720adc43..d0dccb1aaf4c 100644
--- a/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml
+++ b/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml
@@ -117,6 +117,47 @@ properties:
         description:
           Describes if the microphone uses differential mode.
 
+  charger:
+    description: |
+      The child node for the charger to hold additional properties. If a
+      battery is not in use, this node can be omitted.
+    type: object
+    properties:
+      monitored-battery:
+        description: |
+          A phandle to a monitored battery node that contains a valid
+          value for:
+          charge-full-design-microamp-hours,
+          charge-term-current-microamp,
+          constant-charge-current-max-microamp,
+          constant-charge-voltage-max-microvolt,
+          voltage-max-design-microvolt,
+          voltage-min-design-microvolt,
+          and a valid ocv-capacity table.
+
+      rockchip,resistor-sense-micro-ohms:
+        description: |
+          Value in microohms of the battery sense resistor. This value is
+          used by the driver to set the correct divisor value to translate
+          ADC readings into the proper units of measure.
+        enum: [10000, 20000]
+
+      rockchip,sleep-enter-current-microamp:
+        description: |
+          Value in microamps of the sleep enter current for the charger.
+          Value is used by the driver to calibrate the relax threshold.
+
+      rockchip,sleep-filter-current-microamp:
+        description:
+          Value in microamps of the sleep filter current for the charger.
+          Value is used by the driver to derive the sleep sample current.
+
+    required:
+      - monitored-battery
+      - rockchip,resistor-sense-micro-ohms
+      - rockchip,sleep-enter-current-microamp
+      - rockchip,sleep-filter-current-microamp
+
 allOf:
   - if:
       properties:
@@ -323,6 +364,13 @@ examples:
                 };
             };
 
+            rk817_charger: charger {
+                monitored-battery = <&battery>;
+                rockchip,resistor-sense-micro-ohms = <10000>;
+                rockchip,sleep-enter-current-microamp = <300000>;
+                rockchip,sleep-filter-current-microamp = <100000>;
+            };
+
             rk817_codec: codec {
                 rockchip,mic-in-differential;
             };
-- 
2.25.1